Triforis nigrocinctus, 307. 
Triglochin maritima, 155. 
palustris, 155, 156. 
Trinucleus, 210, 211. 
concentricus, 202, 208. 
Trisetum subspicatum, 147. 
Tritia trivittata. 307. 
Troximon glaucurn, 149. 
Turbonillainterrupta, 308. 
Upham, Warren. The antiquity of the 
glacial period, 267 ; the Catskill 
delta, 335 ; geographic limits of 
species of plants in the basin of 
the Red River of the North, 140; 
recent fossils of the harbor and 
Back Bay, Boston, 305; Walden, 
Cochituate, and other lakes en- 
closed by modified drift, 228. 
Urapteryx sambucata, 107. 
Urosalpinx cinerea, 170, 307, 309. 
Urtica gracilis, 166. 
Utetheisa bella. 88. 
Utriculus canaliculatus, 307,308. 
Uvularia, 513. 
Vaccinium corymbosum, 145. 
pennsylvanicum, 145. 
Yanessa, 94. 
Venus mercenaria, 170, 306, 307, 309, 
315, 464. 
Verbascum thapsus, 163. 
Yicia, 153. 
americana, 148. 
Walden lake, 228. 
Walker Grand Honorary Prize, award 
of, to J. D. Dana, 421, 450. 
Walker prize, 24, 301; award of, to 
Gerard de Geer, 453; to W. M. 
Davis, 453. 
Walker prize essay, 454, 477. 
Waterston, R. C., donation of, 319. 
White, J. C. Commemorative sketch 
of Dr. Storer, 347. 
Whittle, Charles L. Genesis of the 
manganese deposits of Quaco, 
N. B., 253. 
Woodsia glabella, 390. 
scopulina, 149. 
Wright, G. F. Additional notes con- 
cerning the Nampa image, 242; 
glacial phenomena of northern 
France and England, 391. 
Xanthium canadense, 161. 
Yoldia limulata, 308. 
Yoma sabina, 64. 
vasuki, 64. 
Yphthima asterope, 57. 
lory ma, 57. 
pandocus, 57. 
philomela, 57. 
Zannichellia palustris, 156. 
Zeucera aesculi, 84. 
Zizera lysizone, 71. 
Zoological Gardens. See Natural History 
Gardens. 
Zygadenus elegans, 156. 
ERRATUM. 
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